🔧 Removes default internals visibility for test projects

Eliminates the automatic exposure of assembly internals to
test projects when no friend assemblies are declared,
streamlining the handling of internals visibility.

Directory.Build.props

@@ -159,13 +159,6 @@
       CopyToOutputDirectory="Never" Visible="false" />
   </ItemGroup>
 
-  <!-- Project internals are exposed to projects named $(Project).Tests by default -->
-  <ItemGroup
-    Condition="@(InternalsVisibleToSuffix->Count()) == 0 AND @(InternalsVisibleTo->Count()) == 0">
-    <InternalsVisibleToSuffix Include=".Tests" />
-    <InternalsVisibleToSuffix Include="Tests" />
-  </ItemGroup>
-
   <PropertyGroup Label="Package">
     <PackageId>$(RootNamespace)</PackageId>
     <Company>Kritikos IO</Company>